first,1st second,2nd 数字后的st/nd什么意思first,1st second,2nd third,3rdforth,4th fifth,5th每个数字后的st/nd/rd/th等是什么意思?是什么的缩写?

问题描述:

first,1st second,2nd 数字后的st/nd什么意思
first,1st second,2nd third,3rd
forth,4th fifth,5th
每个数字后的st/nd/rd/th等是什么意思?是什么的缩写?

1st 就是 first 的简写,2nd 是 second 的简写,3rd 是 third 的简写,4th 是 forth 的简写.以此类推,都是表示序数的意思.